LibreChat

# librechat.yaml — project root, beside your .env
version: 1.3.5          # the value the documentation's own example carries

endpoints:
  custom:
    # Required: name, apiKey, baseURL, models. The name must be unique and
    # must not reuse a built-in endpoint name such as openAI or anthropic.
    - name: "Kunavo"
      apiKey: "${KUNAVO_API_KEY}"        # resolved from .env, not written here
      # Keep the /v1. LibreChat appends /chat/completions to this by default.
      baseURL: "https://api.kunavo.com/v1"
      models:
        default: ["claude-sonnet-5", "claude-haiku-4-5"]
        fetch: true                      # fills the picker from GET /v1/models
      titleConvo: true
      titleModel: "claude-haiku-4-5"         # titles are a separate call — pin a cheap id
      modelDisplayLabel: "Kunavo"

      # Optional but worth the four lines: without it LibreChat prices your
      # traffic from a table it ships. prompt/completion are USD per million
      # tokens; context is that model's own window. All three required.
      tokenConfig:
        claude-sonnet-5:
          prompt: 1.4
          completion: 7
          context: 1000000
        claude-haiku-4-5:
          prompt: 0.7
          completion: 3.5
          context: 200000

# Settles whether a failure is the endpoint, the key, or the client.
curl -sS https://api.kunavo.com/v1/models \
  -H "Authorization: Bearer sk-kn-..."